package jdbc3_25;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.Scanner;

public class LoginDemo {
    public static void main(String[] args) {
        try (Connection connection = DBUtil.getConnection()){
            Statement statement = connection.createStatement();
            Scanner scanner = new Scanner(System.in);
            System.out.println("请输入用户名");
            String username = scanner.nextLine();
            System.out.println("请输入密码");
            String password = scanner.nextLine();
            String sql = "SELECT id,username,password,nickname,age "+
                    "FROM user "+
                    "WHERE username='"+username+"' AND password='"+password+"'";
            //int num = statement.executeUpdate(sql);
            ResultSet rs = statement.executeQuery(sql);
            System.out.println(rs.next()?"登录成功":"登录失败");
        }catch (Exception e){
            e.printStackTrace();
        }
    }
}
